Sea weather in Niihau in Hawaii All the beach weather in Niihau

All the essential weather information for enjoying the beach in Niihau in Hawaii, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Niihau over the next 7 days?

Discover the best moment to go to the beach in Niihau in Hawaii this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Niihau. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Saturday 18 July 202670°F to 79°Fdiscouraged
Sunday 19 July 202670°F to 79°Fdiscouraged
Monday 20 July 202670°F to 79°Fdiscouraged
Tuesday 21 July 202676°F to 79°Fdiscouraged
Wednesday 22 July 202674°F to 79°Fdiscouraged
Thursday 23 July 202677°F to 79°Fdiscouraged
Friday 24 July 202670°F to 79°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Niihau

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 06:08 and will set at 19:27 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 17.4mph km/h (with gusts up to 24.2mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)22°C (72°F)24°C (74°F)25°C (77°F)25°C (78°F)
Perceived temperature28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)25°C (76°F)26°C (78°F)27°C (81°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%83%82%82%80%78%77%80%
Barometric pressure1016 hPa1015 hPa1015 hPa1017 hPa1016 hPa1016 hPa1015 hPa1017 hPa
Cloud cover20%15%9%10%6%5%3%2%
Heat index28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)25°C (76°F)26°C (78°F)27°C (81°F)28°C (82°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)18°C (65°F)19°C (67°F)21°C (70°F)22°C (71°F)
Wind
Speed20km/h (12mph)25km/h (15mph)22km/h (13mph)25km/h (15mph)28km/h (18mph)22km/h (14mph)21km/h (13mph)27km/h (17mph)
Gusts28km/h (17mph)34km/h (21mph)30km/h (18mph)34km/h (21mph)32km/h (20mph)26km/h (16mph)35km/h (22mph)39km/h (24mph)
Direction 99°
E
86°
E
82°
E
89°
E
101°
ESE
93°
E
98°
E
94°
E
Wind chill26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)22°C (72°F)24°C (74°F)25°C (77°F)25°C (78°F)
Waves
Height1.2m (3.8ft)1.2m (4.1ft)1.4m (4.5ft)1.4m (4.5ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.8ft)1.5m (4.9ft)
Direction 256°
WSW
252°
WSW
249°
WSW
246°
WSW
239°
WSW
235°
SW
235°
SW
235°
SW
Period7.1 sec.7.2 sec.8.7 sec.8.7 sec.10.0 sec.9.9 sec.8.4 sec.9.8 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 06:08 and will set at 19:26 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 16.2mph km/h (with gusts up to 22.4mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (78°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (80°F)26°C (80°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%73%73%72%71%69%70%74%
Barometric pressure1017 hPa1016 hPa1016 hPa1017 hPa1017 hPa1015 hPa1015 hPa1016 hPa
Cloud cover83%24%12%12%31%89%0%75%
Heat index27°C (81°F)27°C (81°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (80°F)26°C (80°F)27°C (81°F)
Dew point21°C (70°F)20°C (68°F)20°C (68°F)20°C (67°F)19°C (66°F)19°C (66°F)19°C (66°F)20°C (69°F)
Wind
Speed22km/h (13mph)26km/h (16mph)26km/h (16mph)23km/h (14mph)17km/h (11mph)9km/h (5mph)16km/h (10mph)19km/h (12mph)
Gusts30km/h (19mph)36km/h (22mph)35km/h (22mph)31km/h (19mph)26km/h (16mph)13km/h (8mph)26km/h (16mph)26km/h (16mph)
Direction 76°
ENE
100°
E
86°
E
93°
E
77°
ENE
33°
NNE
118°
ESE
23°
NNE
Wind chill25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (78°F)
Waves
Height1.5m (4.8ft)1.4m (4.7ft)1.5m (4.8ft)1.4m (4.6ft)1.3m (4.3ft)1.2m (4.0ft)1.2m (4.0ft)1.2m (4.0ft)
Direction 132°
SE
106°
ESE
132°
SE
137°
SE
137°
SE
231°
SW
233°
SW
231°
SW
Period8.7 sec.9.8 sec.9.3 sec.8.5 sec.8.7 sec.7.4 sec.8.0 sec.6.3 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.2m (3.9ft)1.0m (3.3ft)0.9m (3ft)1.0m (3.3ft)0.8m (2.6ft)0.9m (3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:09 and will set at 19:26 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 17.4mph km/h (with gusts up to 23.6mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)21°C (70°F)23°C (73°F)25°C (76°F)25°C (78°F)
Perceived temperature27°C (80°F)27°C (80°F)26°C (79°F)26°C (80°F)21°C (70°F)25°C (77°F)26°C (79°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity71%71%69%71%69%67%68%71%
Barometric pressure1016 hPa1014 hPa1015 hPa1016 hPa1016 hPa1014 hPa1013 hPa1015 hPa
Cloud cover1%4%3%6%4%15%12%8%
Heat index27°C (80°F)27°C (80°F)26°C (79°F)26°C (80°F)24°C (76°F)25°C (77°F)26°C (79°F)27°C (81°F)
Dew point20°C (67°F)19°C (67°F)19°C (66°F)19°C (67°F)15°C (60°F)16°C (62°F)18°C (65°F)20°C (67°F)
Wind
Speed28km/h (17mph)19km/h (12mph)9km/h (5mph)18km/h (11mph)14km/h (9mph)8km/h (5mph)13km/h (8mph)13km/h (8mph)
Gusts38km/h (23mph)26km/h (16mph)12km/h (7mph)25km/h (15mph)29km/h (18mph)17km/h (10mph)21km/h (13mph)18km/h (11mph)
Direction 105°
ESE
65°
ENE
99°
E
92°
E
45°
NE
96°
E
86°
E
351°
N
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)21°C (70°F)23°C (73°F)25°C (76°F)25°C (78°F)
Waves
Height1.2m (4.1ft)1.3m (4.3ft)1.2m (4.0ft)1.2m (3.8ft)1.1m (3.7ft)1.1m (3.7ft)1.1m (3.7ft)1.2m (3.9ft)
Direction 199°
SSW
197°
SSW
183°
S
171°
S
173°
S
171°
S
170°
S
171°
S
Period7.3 sec.7.2 sec.11.4 sec.11.5 sec.14.2 sec.11.0 sec.6.2 sec.10.4 sec.
Significant height0.8m (2.6ft)1.1m (3.6ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)0.9m (3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:09 and will set at 19:26 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 14.9mph km/h (with gusts up to 21.1mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)25°C (77°F)25°C (78°F)
Perceived temperature27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (81°F)27°C (80°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity72%73%73%72%74%74%75%79%
Barometric pressure1015 hPa1013 hPa1014 hPa1015 hPa1014 hPa1013 hPa1013 hPa1014 hPa
Cloud cover84%39%9%34%29%82%72%8%
Heat index27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)26°C (80°F)27°C (81°F)27°C (80°F)28°C (82°F)
Dew point20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (68°F)20°C (68°F)21°C (71°F)
Wind
Speed11km/h (7mph)12km/h (7mph)15km/h (10mph)15km/h (9mph)17km/h (11mph)17km/h (11mph)19km/h (12mph)24km/h (15mph)
Gusts15km/h (9mph)15km/h (10mph)21km/h (13mph)21km/h (13mph)27km/h (17mph)25km/h (15mph)32km/h (20mph)34km/h (21mph)
Direction 94°
E
34°
NE
57°
ENE
93°
E
90°
E
95°
E
95°
E
91°
E
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (78°F)25°C (77°F)25°C (78°F)
Waves
Height1.2m (3.9ft)1.2m (3.8ft)1.1m (3.7ft)1.1m (3.7ft)1.1m (3.8ft)1.1m (3.7ft)1.2m (3.8ft)1.3m (4.4ft)
Direction 172°
S
173°
S
171°
S
171°
S
171°
S
171°
S
171°
S
171°
S
Period7.8 sec.13.1 sec.14.6 sec.14.5 sec.14.4 sec.14.4 sec.14.2 sec.13.7 sec.
Significant height0.9m (3ft)1.3m (4.3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)1.3m (4.3ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:10 and will set at 19:25 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 74°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 18.6mph km/h (with gusts up to 24.9mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (78°F)25°C (77°F)25°C (78°F)25°C (77°F)23°C (74°F)26°C (78°F)25°C (78°F)
Perceived temperature28°C (82°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)25°C (77°F)27°C (81°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%77%78%76%73%72%73%76%
Barometric pressure1015 hPa1014 hPa1014 hPa1016 hPa1015 hPa1014 hPa1014 hPa1016 hPa
Cloud cover19%30%36%19%41%7%23%7%
Heat index28°C (82°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)25°C (77°F)27°C (81°F)27°C (81°F)
Dew point21°C (70°F)21°C (70°F)21°C (70°F)21°C (70°F)20°C (67°F)18°C (64°F)20°C (69°F)21°C (69°F)
Wind
Speed24km/h (15mph)27km/h (17mph)30km/h (19mph)28km/h (17mph)24km/h (15mph)24km/h (15mph)17km/h (10mph)26km/h (16mph)
Gusts33km/h (20mph)37km/h (23mph)40km/h (25mph)38km/h (24mph)37km/h (23mph)25km/h (16mph)24km/h (15mph)37km/h (23mph)
Direction 84°
E
94°
E
87°
E
91°
E
95°
E
102°
ESE
82°
E
99°
E
Wind chill26°C (78°F)25°C (78°F)25°C (77°F)25°C (78°F)25°C (77°F)23°C (74°F)26°C (78°F)25°C (78°F)
Waves
Height1.3m (4.4ft)1.4m (4.5ft)1.3m (4.3ft)1.3m (4.4ft)1.4m (4.5ft)1.4m (4.4ft)1.4m (4.4ft)1.4m (4.6ft)
Direction 170°
S
169°
S
173°
S
173°
S
171°
S
172°
S
177°
S
187°
S
Period13.6 sec.13.7 sec.12.1 sec.13.8 sec.11.8 sec.11.7 sec.12.5 sec.12.5 sec.
Significant height1.2m (3.9ft)1.3m (4.3ft)1.1m (3.6ft)1.5m (4.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)
Sea water temperature
Water temperature24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:10 and will set at 19:25 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 77°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 18mph km/h (with gusts up to 25.5mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)26°C (78°F)25°C (78°F)
Perceived temperature27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%73%76%77%76%77%76%76%
Barometric pressure1017 hPa1016 hPa1016 hPa1017 hPa1017 hPa1016 hPa1016 hPa1017 hPa
Cloud cover24%13%24%35%39%32%17%4%
Heat index27°C (81°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (81°F)28°C (82°F)27°C (81°F)
Dew point21°C (69°F)20°C (68°F)20°C (69°F)20°C (69°F)20°C (68°F)21°C (69°F)21°C (70°F)21°C (69°F)
Wind
Speed26km/h (16mph)22km/h (14mph)23km/h (15mph)20km/h (13mph)25km/h (15mph)27km/h (17mph)26km/h (16mph)29km/h (18mph)
Gusts35km/h (22mph)30km/h (19mph)32km/h (20mph)29km/h (18mph)38km/h (23mph)39km/h (24mph)37km/h (23mph)41km/h (25mph)
Direction 74°
ENE
85°
E
78°
ENE
78°
ENE
81°
E
90°
E
84°
E
92°
E
Wind chill26°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)26°C (78°F)25°C (78°F)
Waves
Height1.4m (4.7ft)1.5m (4.9ft)1.5m (4.9ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.5m (4.9ft)
Direction 192°
SSW
192°
SSW
194°
SSW
193°
SSW
193°
SSW
195°
SSW
193°
SSW
192°
SSW
Period11.5 sec.11.8 sec.12.6 sec.11.4 sec.9.7 sec.10.1 sec.8.8 sec.9.0 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature24°C (76°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:10 and will set at 19:25 on the beach(es) of Niihau. The outside temperature will be a high of 79°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 16.8mph km/h (with gusts up to 24.2mph). Wave height will be up to 5.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)25°C (77°F)25°C (77°F)24°C (74°F)22°C (71°F)24°C (75°F)26°C (78°F)25°C (78°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (80°F)26°C (79°F)22°C (71°F)26°C (78°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%74%73%76%74%72%75%76%
Barometric pressure1017 hPa1016 hPa1017 hPa1018 hPa1017 hPa1016 hPa1016 hPa1017 hPa
Cloud cover4%9%37%51%12%14%15%18%
Heat index27°C (81°F)27°C (81°F)27°C (80°F)26°C (79°F)25°C (76°F)26°C (78°F)28°C (82°F)27°C (81°F)
Dew point21°C (69°F)20°C (68°F)20°C (68°F)19°C (67°F)17°C (62°F)19°C (65°F)21°C (69°F)21°C (69°F)
Wind
Speed27km/h (17mph)24km/h (15mph)18km/h (11mph)27km/h (17mph)24km/h (15mph)19km/h (12mph)22km/h (14mph)26km/h (16mph)
Gusts39km/h (24mph)32km/h (20mph)24km/h (15mph)34km/h (21mph)25km/h (15mph)23km/h (15mph)32km/h (20mph)37km/h (23mph)
Direction 85°
E
84°
E
83°
E
84°
E
86°
E
85°
E
78°
ENE
90°
E
Wind chill25°C (78°F)25°C (77°F)25°C (77°F)24°C (74°F)22°C (71°F)24°C (75°F)26°C (78°F)25°C (78°F)
Waves
Height1.6m (5.2ft)1.5m (4.9ft)1.5m (4.9ft)1.4m (4.6ft)1.4m (4.6ft)1.5m (4.9ft)1.5m (4.9ft)1.6m (5.2ft)
Direction 193°
SSW
195°
SSW
194°
SSW
192°
SSW
191°
SSW
192°
SSW
195°
SSW
193°
SSW
Period9.3 sec.10.7 sec.13.2 sec.9.9 sec.11.2 sec.10.7 sec.7.9 sec.8.3 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.0m (3.3ft)1.2m (3.9ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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